/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.gateway.svcregfunc.impl;
import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriteEnvironment;
import org.apache.hadoop.gateway.filter.rewrite.api.UrlRewriter;
import org.apache.hadoop.gateway.filter.rewrite.spi.UrlRewriteContext;
import org.apache.hadoop.gateway.filter.rewrite.spi.UrlRewriteFunctionProcessor;
import org.apache.hadoop.gateway.services.GatewayServices;
import org.apache.hadoop.gateway.services.hostmap.HostMapper;
import org.apache.hadoop.gateway.services.hostmap.HostMapperService;
import org.apache.hadoop.gateway.services.registry.ServiceRegistry;
import org.apache.hadoop.gateway.svcregfunc.api.ServiceUrlFunctionDescriptor;
import org.easymock.EasyMock;
import org.junit.Before;
import org.junit.Test;
import java.util.Arrays;
import java.util.Iterator;
import java.util.ServiceLoader;
import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.collection.IsIterableContainingInOrder.contains;
import static org.junit.Assert.fail;
public class ServiceUrlFunctionProcessorTest {
HostMapperService hms;
HostMapper hm;
ServiceRegistry reg;
GatewayServices svc;
UrlRewriteEnvironment env;
UrlRewriteContext ctx;
ServiceUrlFunctionDescriptor desc;
@Before
public void setUp() {
hm = EasyMock.createNiceMock( HostMapper.class );
EasyMock.expect( hm.resolveInboundHostName( "test-host" ) ).andReturn( "test-internal-host" ).anyTimes();
hms = EasyMock.createNiceMock( HostMapperService.class );
EasyMock.expect( hms.getHostMapper( "test-cluster" ) ).andReturn( hm ).anyTimes();
reg = EasyMock.createNiceMock( ServiceRegistry.class );
EasyMock.expect( reg.lookupServiceURL( "test-cluster", "test-service" ) ).andReturn( "test-scheme://test-host:777/test-path" ).anyTimes();
svc = EasyMock.createNiceMock( GatewayServices.class );
EasyMock.expect( svc.getService( GatewayServices.SERVICE_REGISTRY_SERVICE ) ).andReturn( reg ).anyTimes();
EasyMock.expect( svc.getService( GatewayServices.HOST_MAPPING_SERVICE ) ).andReturn( hms ).anyTimes();
env = EasyMock.createNiceMock( UrlRewriteEnvironment.class );
EasyMock.expect( env.getAttribute( GatewayServices.GATEWAY_SERVICES_ATTRIBUTE ) ).andReturn( svc ).anyTimes();
EasyMock.expect( env.getAttribute( GatewayServices.GATEWAY_CLUSTER_ATTRIBUTE ) ).andReturn( "test-cluster" ).anyTimes();
ctx = EasyMock.createNiceMock( UrlRewriteContext.class );
EasyMock.expect( ctx.getDirection() ).andReturn( UrlRewriter.Direction.IN ).anyTimes();
desc = EasyMock.createNiceMock( ServiceUrlFunctionDescriptor.class );
EasyMock.replay( hm, hms, reg, svc, env, desc, ctx );
}
@Test
public void testServiceLoader() throws Exception {
ServiceLoader loader = ServiceLoader.load( UrlRewriteFunctionProcessor.class );
Iterator iterator = loader.iterator();
assertThat( "Service iterator empty.", iterator.hasNext() );
while( iterator.hasNext() ) {
Object object = iterator.next();
if( object instanceof ServiceUrlFunctionProcessor ) {
return;
}
}
fail( "Failed to find " + ServiceUrlFunctionProcessor.class.getName() + " via service loader." );
}
@Test
public void testName() throws Exception {
ServiceUrlFunctionProcessor func = new ServiceUrlFunctionProcessor();
assertThat( func.name(), is( "serviceUrl" ) );
}
@Test
public void testInitialize() throws Exception {
ServiceUrlFunctionProcessor func = new ServiceUrlFunctionProcessor();
try {
func.initialize( null, desc );
fail( "Should have thrown an IllegalArgumentException" );
} catch( IllegalArgumentException e ) {
assertThat( e.getMessage(), containsString( "environment" ) );
}
func = new ServiceUrlFunctionProcessor();
try {
func.initialize( env, null );
} catch( Exception e ) {
e.printStackTrace(); //NOTE: OK to use e.printStackTrace for a test failure.
fail( "Should not have thrown an exception" );
}
func.initialize( env, desc );
assertThat( func.cluster(), is( "test-cluster" ) );
assertThat( func.registry(), sameInstance( reg ) );
}
@Test
public void testDestroy() throws Exception {
ServiceUrlFunctionProcessor func = new ServiceUrlFunctionProcessor();
func.initialize( env, desc );
func.destroy();
assertThat( func.cluster(), nullValue() );
assertThat( func.registry(), nullValue() );
}
@Test
public void testResolve() throws Exception {
ServiceUrlFunctionProcessor func = new ServiceUrlFunctionProcessor();
func.initialize( env, desc );
assertThat( func.resolve( ctx, Arrays.asList( "test-service" ) ), contains( "test-scheme://test-host:777/test-path" ) );
assertThat( func.resolve( ctx, Arrays.asList( "invalid-test-service" ) ), contains( "invalid-test-service" ) );
assertThat( func.resolve( ctx, null ), nullValue() );
func.destroy();
}
}